Reply To: 1926 Johnson J-25

[LLOYD LAUTNER]

It sounds like the threads in the muffler are stripped out so that the smaller correct size screws in the plate won’t thread into place. Best repair would be to weld shut the holes in the muffler, then redrill and tap for the smaller correct size screws. Or get some screw in thread repair from Ace Hardware that will match the original smaller screws. I can’t remember if there is supposed to be a gasket under the plate but it isn’t really necessary. I hope you have enough aluminum in the muffler to accept the thread repair. If not, you might have to drill out the plate and use larger screws. Tough call.